chump

UK: /ˈtʃʌmp/ US: /tʃʌmp/ ,(chump)

WordReference Random House Learner's Dictionary of American English © 2025

chump¹ /tʃʌmp/   n. [countable]

1. Informal Terms Informal. a person easily fooled;
   a fool:
   He was such a chump to believe her lies.

Idioms

2. British Terms off one's chump, Brit. crazy.

WordReference Random House Unabridged Dictionary of American English © 2025

chump¹  (chump), n. 

1. Informal Terms a stupid person;
   dolt:
   Don't be a chump--she's kidding you along.
2. a short, thick piece of wood.
3. the thick, blunt end of anything.
4. Slang Terms the head.
5. British Terms off one's chump, crazy.

• perh. blend of, blended chunk¹ and lump 1695–1705

chump′ish, adj. 
chump′ish•ness, n. 

chump²  (chump), v.t., v.i. 

1. to bite or chew;
   munch.

Also, chomp. 

• variant of champ¹ 1850–55

Collins Concise English Dictionary © HarperCollins Publishers::

chump / tʃʌmp/ noun

1. a stupid person
2. a thick heavy block of wood
3. the thick blunt end of anything, esp of a piece of meat
4. (as modifier): a chump chop
5. the head (esp in the phrase off one's chump)

Etymology: 18th Century: perhaps a blend of chunk and lump¹

chump / tʃʌmp/ verb

1. a less common word for chomp

WordReference Random House Learner's Dictionary of American English © 2025

chomp /tʃɑmp/   v., n. 

1. champ¹.

WordReference Random House Unabridged Dictionary of American English © 2025

chomp  (chomp), v.t., v.i., n. 

1. champ¹.

Collins Concise English Dictionary © HarperCollins Publishers::

chomp / tʃɒmp/, chump verb

1. to chew (food) noisily; champ

noun

1. the act or sound of chewing in this manner

Etymology: variant of champ¹